Mass Transfer
Decoction refers to the use of solvent

At ambient temperature
At its boiling point
None of these
In its vapor form

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Mass Transfer
Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when

Extracting solvent is cheaply & abundantly available
Viscosity of liquid components is very high
One of the liquid components is heat sensitive
One of the liquid components has very high affinity towards the solvent

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Mass Transfer
In case of an absorber, the operating

Line always lies above the equilibrium curve
Velocity is more than the loading velocity
Line can be either above or below the equilibrium curve
Line always lies below the equilibrium curve

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